Benchmark: Lodash Union vs Spread (100000)

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js'></script>

Script Preparation code:

var arr1 = new Array(100000).fill(0);
var arr2 = new Array(100000).fill(1);

Tests:

Spread Operator
[...arr1, arr2]
Lodash union
_.union(arr1, arr2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Spread Operator
Lodash union

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

I'd be happy to help explain the benchmark!

**What is being tested?**

The provided JSON represents two test cases:

1. `Spread Operator`: This test case measures how fast JavaScript can execute an array using the spread operator (`[...arr1, arr2]`) to concatenate two arrays.
2. `Lodash union` (using Lodash library): This test case measures how fast JavaScript can execute the same operation using the `_union` function from the Lodash library.

**Options being compared**

The benchmark is comparing the performance of two approaches:

1. Using the spread operator (`[...arr1, arr2]`)
2. Using the `_.union` function from the Lodash library

**Pros and Cons of each approach:**

1. **Spread Operator**:
	* Pros:
		+ Native JavaScript syntax, which is likely to be more efficient since it doesn't require additional libraries or functions.
		+ No additional dependencies needed.
	* Cons:
		+ May not be as readable or maintainable, especially for complex concatenations.
2. **Lodash union**:
	* Pros:
		+ More readable and maintainable, as the operation is clearly defined using a function name (`_.union`).
		+ Can be more efficient if the Lodash library is optimized for this specific operation.
	* Cons:
		+ Requires an additional library (Lodash) to be included in the test environment.

**Library usage:**

The Lodash library is being used specifically for the `_.union` function. Lodash is a popular JavaScript utility library that provides various functions for common tasks, such as array operations (`_.union`, `_merge`, etc.).

**Other considerations:**

* Both tests are creating two large arrays and concatenating them using either the spread operator or the Lodash library.
* The benchmark measures the number of executions per second, which is a common metric for performance benchmarks.

**Alternatives:**

If you wanted to explore alternative approaches, you could consider:

1. Using other array concatenation methods (e.g., `concat()`, `push()`).
2. Implementing your own custom function for union operations.
3. Testing with smaller arrays to see if the results scale similarly.
4. Adding more test cases to measure performance under different conditions (e.g., with different array lengths, data types, or other influencing factors).

Keep in mind that these alternatives might not be directly comparable to the original tests, and their results may vary based on specific implementation details and platform specifics.

Related benchmarks:

Lodash Union vs Spread (100000) (version: 0)

Comparing performance of: Spread Operator vs Lodash union

Created: 2 years ago by: Guest

Jump to the latest result

Spread Operator

Lodash union

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):